This article lists non-canon information. Additions to the brief character definitions listed here should include only a list of appearances and a short definition of their status as of their last appearance in this series. Other non-canon appearances will not be listed here. If you want to read about their canon information, their names will be hyperlinked to their main article. The specifics of non-canon characters' appearances should be listed in the character section of each audio production, novel, comic book, or game in which they played a role.

McCoy did not appear in the "Invasion of the City Builders", but was pictured on the cover. On a handful of occasions he was drawn with a command division yellow uniform shirt, beginning with some panels of his first appearance. Further information about McCoy's other non-canon appearances is listed at non-canon characters, as well as his main article.

An unnamed female lieutenant who resembled Uhura appeared in "The Devil's Isle of Space" but she had light skin. Uhura did not appear in "Invasion of the City Builders" and "The Youth Trap", but was pictured on the covers. Further information about Uhura's other non-canon appearances is listed at non-canon characters, as well as her main article.

Sulu did not appear in the "The Planet of No Return" and "The Youth Trap", but was pictured on the covers. Further information about Sulu's other non-canon appearances is listed at non-canon characters, as well as his main article.

In "The Perfect Dream", Chekov was seen and referenced but did not have dialogue. In "The Mummies of Heitius VII", Chekov was referenced but did not appear or have dialogue. Interestingly enough, that story mentioned him as a security officer -- a position he would eventually fill in canon productions also. Further information about Chekov's other non-canon appearances is listed at non-canon characters, as well as his main article.

She did not appear in "The Youth Trap", but was pictured on the cover. On the cover of "The Final Truth", Chapel is inexplicably shown wearing an operations division red skirt she was never known to wear in canon productions. Further information about Chapel's other non-canon appearances is listed at non-canon characters, as well as her main article.

Member of the Enterprise security crew. Manning was assigned to the guard detail for a mummy the Enterprise recovered, but was rendered unconscious by that charge. Later, Manning joined landing parties to Rifas-L and Tristas. ("The Mummies of Heitius VII", "The Perfect Dream", "The Final Truth") In "The Mummies of Heitius VII", Manning wore a gold command division uniform, but identified himself as a member of security. He had dark hair that was receding. By "The Perfect Dream", he wore an operations divisionredshirt and had gone gray, lost more hair, and grown a mustache. In "The Final Truth", he was back in his gold shirt and once again had brown hair.

Canon characters listed below are linked to the main article about them. Non-canon characters are not linked, but those that recurred, appearing or being mentioned in more than one story, are defined further in non-canon characters.